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This article gives equations without explaining what the variables refer to. Also, it would be helpful to add an explanation of the equations beyond giving the meanings of the variables. Finally, the article doesn't explain how pumping a fluid results in cooling. Erik Zoltan 17:20, 10 August 2007 (UTC)
Would anyone object to a small addition mentioning simple estimations of beta? I'll add it tomorrow if not. Chng3802B ( talk) 05:06, 19 March 2008 (UTC)
The opener didn't quite get the meaning or process of convection across to me (the "what it is"). I see that the article convection defines it more clearly so I'll add a little (see convection after the first definition). Seems that this page deals with more complex equations involved in the process than the other page. Maybe this page should be split in three? (don't know the wikipedia guidline for this case)... 1 page refering to Convective heat transfer as the adj: "of or partaining to convective heat" or something, and 1 page for each of the two types of convective heat types (although I can see the benafit of keeping the two mathmatical properties on the same page, but seperate from the other). I'm no expert on the subject so maybe I'm way off base here. Xetxo ( talk) 19:36, 16 December 2008 (UTC)
Hi I am presently taking a class in heat transfer.
Perhaps this gives me a "to technical" view of convection, but when a fluid moves heat from one place to another that is called Advection.
Convection is heat transfer from a surface to a moving fluid. Well at least in the context of my heat transfer text book.
The distinction between convection and advection is discussed on the article on advection, but not in this article. However perhaps I am taking to narrow of a view here. I could however provide a citation from a current engineering text book on the definition of convection within the mechanical engineering field of heat transfer. StressTensor ( talk) 21:29, 11 April 2011 (UTC)
However, that said, perhaps the definition your texts give and the one here end up functionally being the same definition, as note that it takes diffusion to get heat back and forth through the boundary layer between a solid and a moving fluid, so BOTH mechanisms of heat transfer in "convection" (heat diffusion = conduction AND heat advection) are needed in the case of solid<->fluid heat transfer. So defining convection in those terms (the ones your text gives) explicitly means that some process other than pure heat-advection (ie, diffusion/conduction, also) must be involved. See the point? S B H arris 22:57, 11 April 2011 (UTC)
(the quite below is from page 6 of Introduction to heat transfer, Incropera DeWitt VBergham Lavine 2007 ISBN-13 978-471-45727-5 The quote above is from the same text, pg 348 the first paragraph of chapter 6 introduction to convection)
StressTensor ( talk) 18:01, 14 April 2011 (UTC)
Thanks. There you go, then. The article already has it exactly right. If you would, perhaps you can add your quotes there as cites. S B H arris 18:25, 14 April 2011 (UTC)
StressTensor ( talk) 18:54, 18 April 2011 (UTC)
I think many of your readers would be interested in knowing more about the role that the Prandtl_number and Nusselt_number play in convective heat transfer. The present article does not even mention these and maybe it would be better if it did? StressTensor ( talk) 18:59, 18 April 2011 (UTC)
Stated in [ [1]], there appear the names "heat reservoir" and "heat content".
Being heat, by definition, transient energy, I think that this phrasing is misleading. Don't you agree?
It seems to me that the Newtonian section here assumes that the convective transfer is close to 0, and is therefore not a representation of convective transfer (and more closely related to conductive transfer). Am I misinterpreting this in any way? Techhead7890 ( talk) 03:52, 9 February 2014 (UTC)
I would certainly support this becoming a separate page if an editor came along with decent reference works concerning the historical context of Newton's investigations. I didn't find a lot in a quick search. I did find one PPT which claimed that Newton used a modern-style thin tube thermometer filled with linseed oil, marked in a "Celsius" scale (perhaps centigrade would be the more correct term). It also pointed out that Newton's law is correct even though his own experiment disagreed, due to experimental effects such as convection within the thermometer itself. It wasn't up to cite-worthy standards, though. It seems Newton himself only regarded his law as valid for temperature differences up to 10 degrees C.— MaxEnt 10:48, 10 April 2014 (UTC)
I have just cleaned up the article on Convection and removed a lot of good information on convective heat transfer. See: https://en.wikipedia.org/?title=Convection&oldid=1014775282 A lot of the removed information should be recovered to this article.
The result of the move request was: Move to Convection (heat transfer) Best Wishes, Lee Vilenski ( talk • contribs) 11:37, 12 April 2021 (UTC)
Convective heat transfer → Convection (Heat Transfer) – To help eliminate confusion between the different physical phenomena which are described by the same name in different contexts. 60.242.168.210 ( talk) 11:57, 5 April 2021 (UTC)
On second thoughts, Convection (Heat transfer) now exists and redirects to Convective heat transfer. Maybe this one should stay, but the fluid dynamics Convection should move to Convection (Fluid dynamics)?
Convetion 69.160.112.122 ( talk) 23:37, 25 January 2023 (UTC)
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This article gives equations without explaining what the variables refer to. Also, it would be helpful to add an explanation of the equations beyond giving the meanings of the variables. Finally, the article doesn't explain how pumping a fluid results in cooling. Erik Zoltan 17:20, 10 August 2007 (UTC)
Would anyone object to a small addition mentioning simple estimations of beta? I'll add it tomorrow if not. Chng3802B ( talk) 05:06, 19 March 2008 (UTC)
The opener didn't quite get the meaning or process of convection across to me (the "what it is"). I see that the article convection defines it more clearly so I'll add a little (see convection after the first definition). Seems that this page deals with more complex equations involved in the process than the other page. Maybe this page should be split in three? (don't know the wikipedia guidline for this case)... 1 page refering to Convective heat transfer as the adj: "of or partaining to convective heat" or something, and 1 page for each of the two types of convective heat types (although I can see the benafit of keeping the two mathmatical properties on the same page, but seperate from the other). I'm no expert on the subject so maybe I'm way off base here. Xetxo ( talk) 19:36, 16 December 2008 (UTC)
Hi I am presently taking a class in heat transfer.
Perhaps this gives me a "to technical" view of convection, but when a fluid moves heat from one place to another that is called Advection.
Convection is heat transfer from a surface to a moving fluid. Well at least in the context of my heat transfer text book.
The distinction between convection and advection is discussed on the article on advection, but not in this article. However perhaps I am taking to narrow of a view here. I could however provide a citation from a current engineering text book on the definition of convection within the mechanical engineering field of heat transfer. StressTensor ( talk) 21:29, 11 April 2011 (UTC)
However, that said, perhaps the definition your texts give and the one here end up functionally being the same definition, as note that it takes diffusion to get heat back and forth through the boundary layer between a solid and a moving fluid, so BOTH mechanisms of heat transfer in "convection" (heat diffusion = conduction AND heat advection) are needed in the case of solid<->fluid heat transfer. So defining convection in those terms (the ones your text gives) explicitly means that some process other than pure heat-advection (ie, diffusion/conduction, also) must be involved. See the point? S B H arris 22:57, 11 April 2011 (UTC)
(the quite below is from page 6 of Introduction to heat transfer, Incropera DeWitt VBergham Lavine 2007 ISBN-13 978-471-45727-5 The quote above is from the same text, pg 348 the first paragraph of chapter 6 introduction to convection)
StressTensor ( talk) 18:01, 14 April 2011 (UTC)
Thanks. There you go, then. The article already has it exactly right. If you would, perhaps you can add your quotes there as cites. S B H arris 18:25, 14 April 2011 (UTC)
StressTensor ( talk) 18:54, 18 April 2011 (UTC)
I think many of your readers would be interested in knowing more about the role that the Prandtl_number and Nusselt_number play in convective heat transfer. The present article does not even mention these and maybe it would be better if it did? StressTensor ( talk) 18:59, 18 April 2011 (UTC)
Stated in [ [1]], there appear the names "heat reservoir" and "heat content".
Being heat, by definition, transient energy, I think that this phrasing is misleading. Don't you agree?
It seems to me that the Newtonian section here assumes that the convective transfer is close to 0, and is therefore not a representation of convective transfer (and more closely related to conductive transfer). Am I misinterpreting this in any way? Techhead7890 ( talk) 03:52, 9 February 2014 (UTC)
I would certainly support this becoming a separate page if an editor came along with decent reference works concerning the historical context of Newton's investigations. I didn't find a lot in a quick search. I did find one PPT which claimed that Newton used a modern-style thin tube thermometer filled with linseed oil, marked in a "Celsius" scale (perhaps centigrade would be the more correct term). It also pointed out that Newton's law is correct even though his own experiment disagreed, due to experimental effects such as convection within the thermometer itself. It wasn't up to cite-worthy standards, though. It seems Newton himself only regarded his law as valid for temperature differences up to 10 degrees C.— MaxEnt 10:48, 10 April 2014 (UTC)
I have just cleaned up the article on Convection and removed a lot of good information on convective heat transfer. See: https://en.wikipedia.org/?title=Convection&oldid=1014775282 A lot of the removed information should be recovered to this article.
The result of the move request was: Move to Convection (heat transfer) Best Wishes, Lee Vilenski ( talk • contribs) 11:37, 12 April 2021 (UTC)
Convective heat transfer → Convection (Heat Transfer) – To help eliminate confusion between the different physical phenomena which are described by the same name in different contexts. 60.242.168.210 ( talk) 11:57, 5 April 2021 (UTC)
On second thoughts, Convection (Heat transfer) now exists and redirects to Convective heat transfer. Maybe this one should stay, but the fluid dynamics Convection should move to Convection (Fluid dynamics)?
Convetion 69.160.112.122 ( talk) 23:37, 25 January 2023 (UTC)